Dispensing apparatus



Dec. 1, 1936. c p; GRlFFlTH 2,062,308

DISPENSING APPARATUS I Filed Aug. '12, 1929 s Sheets-Sheet 1 c.- P. GRIFFITH 08 I DISPENSING APPARATUS I Dec. 1, 1936.

Filed Aug. 12, 1.929

8 Sheets-Sheet 2 Dec. 1, 1936. P, F TH 2,062,308

DISPENS ING APPARATUS Filed Aug. 12, 1929 8Sheets-Sheet 3 IIIIIIIUHH I [HZ/@1010]? Dec. 1, 1936.

Filed Aug. 12,

C. P. GRIFFITH DI$PENSING APPARATUS 1929' a Sheets-Sheet 4 Jmgmw f Dec. 1, 1936.

c. P. GRIFFITH DISPENSING APP ARATUS Filed Aug. '12, 1929 8 $heets$heet 5 Dec 1,l1936.

.C. P. GRIFFITH DI S.PENSINGI-APPARATU S Filed Aug. 12, 1929 8 Sheets-Sheet 6 Patented Dec. 1, 1936 UNITED STATES DISPENSING APPARATUS Clement P. Griiflth, Fort Wayne, ImL, aasignor to S. F. Bowser & Company, Inc., Fort Wayne, Ind., a corporation of Indiana Application August 12, 1929, Serial No. 385,165 39 Claims. (CL-221-95) My invention relates to dispensing apparatus particularly adapted to the dispensing of gasoline at filling stations although it may have a general application, and one of the objects 01' my 5 invention is the provision of improved apparatus of this type to permit the operator to have complete control at the dispensing nozzle of the entire apparatus.

More particularly it is the object of the inven 10 tion to provide in dispensing apparatus poweroperated mechanism combined with controlling means associated with the dispensing nozzle so that a one-point control at the nozzle may be had for starting and stopping the operation of 15 the dispensing unit and effecting delivery ofthe liquid from the nozzle.

Another object of the invention is the provision of manually-operated mechanism at the dispensing unit for controlling the starting and stopping .20 f the dispensing apparatus independently of the 25 the dispensing apparatus so that when the nozzle is inserted in an opening in the housing of the dispensing-unit the dispensing amiaratus cannot be operated either by controlling mechanism at the nozzle or by the manually-operated mecha- 30 nism at the dispensing unit.

Other objects of the invention will appear hereinafter, the novel features and combinations being set forth in the appended claims.

Referring to theaccompanying drawings- Fig. 1 represents a dispensing system embodying my improvements;

Fig. 2 is an enlarged elevationalsview of the 'upper portion of the dispensing unit shown in Fig. 1,. including the dispensing nozzle and the control mechanism associated therewith;

Fig. 3 is an enlarged elevational view of the lower left-hand portion 0t Fig. 2 with the interlocking mechanism added;

Fig. 4 is a'plan view of the structure shown in Fig. 5 is an elevational viewof the right-hand side of the construction shown in Fig. 3 with a portion of the air pressure motor shown in ele- 50 vation; Q,

Fig. 6 is an enlarged sectional elevation of the valve mechanism associated with the nozzle with the controlling means of the air pressure motor shown in elevation; I

55 'Fig. 7-is an inv rted sect ona e a n 9. the

upper end' of the flexible hose 3!. Tothe i'ree air pressure controlling valve mechanism associated with the nozzle;

Fig. 8 is an elevational view of the main.controlling valve in the dispensing unit, with the interior valvemechanism shown in dotted lines; 5

Fig. 9 is a sectional elevation of the main valve structure taken on the line 9-9 01' Fig. 8;

Fig. 10 is a sectional elevation of the mercury switch for controlling "the electric motor connectedto a pump in the dispensing system; 10

Fig. 11 isa sectional elevation taken on the line H-ll of Fig. 10 looking in the direction of the arrows, with the parts somewhat enlarged as compared with Fig. 10; and

Fig. 12 represents a wiring diagram of the 15 electrical circuits.

Referring to Fig. v1 showing the adaptation of my one-point control system from the dispensing nozzle, I3 designates a storage tank which is adapted to .be buried in the ground and filled with gasoline through the fill-pipe l4. By means of a rotary pump l5 operated by an electric motor Hi the gasoline in the tank l3 may be drawn through the suction pipe l1 through the line valve l8 into the gasoline pipe l 9. The line valve I8 is a check-valve which opens toward the pipe is, but prevents flow from the pipe l9 back into the suction pipe ll.

The pump l i forces gasoline into the vertical pipe and down the pipe 2| after passing through the air release 22. -From thepipe 2|, the gasoline passes into the horizontal pipe 23 to the manual valve 24. When the hand-operated valve 24 is open the gasoline may flow through a suitable screen filtering device 25 into a pipe 26 and thence through the main valve 21 into and through a meter 28 irom'which the gasoline flows upwardly through the vertical pipe 29 to the sight-glassv 30 at the end of the flexible discharge hose is connected the valve-controlled nozzle 32.

-The dispensing unit is provided with a dial. with pointers 34 and 35 associated therewith and operated by the mechanism of the meter 28. The pointers may be re-set by the knob 36. The housing 31 may have translucent dials on opposite sides thereof with an incandescent lamp and a reflector in the canopy 38 for illuminating. the rear sides of the dials. The dials may have quart and gallon indications thereon and a the longer pointer 34 may be for the purpose of 35 may move forward one step to indicate one gallon.

The dispensing unit shown includes a wet hose in that the nozzle is provided with a valve 39 which is closed when no dispensing operation is taking place and therefore the hose 3| always remains filled with gasoline. It should be understood, however, that my invention is also applicable to dry hose dispensing units, the principal object being to enable the operator to have a onepoint control of the dispensing apparatus at the nozzle.

The main dispensing valve 21 is shown in detail in Figs. 8 and 9. The lower end of the valve body 48 is closed by means of a screw-threaded plug 4| which serves as a support at 42 for the spring 43 acting on the valve 44 to hold the same against the valve seat 45. The valve stem 46 is guided into the recess 41 on the upper side of the screw plug 4|.

A rod 48 extends freely into a recess 49 in the.

provided with a gland 54 pressed against the packing by the spring 55 which is held in place by the screw-threaded cap 56. The packing box 51 is screw-threaded at 58 into the body 48 of the valve structure 21.

The outer end of the rock shaft 52 is threaded at 59 to receive the nut 68 so that the crank 6| may be secured to the rock shaft 52. It will thus be seen that when the crank arm 6| is actuated in a clockwise direction as viewed in Fig. 8, the push rod 48 will be moved downwardly to lower the valve stem 46 in the guideway 41 and thereby open the valve 44 against the action of the spring 43. When the crank arm 6| is released the spring 43 will automatically close the valve 44 and restore the crank arm 6| to its initial position.

By referring to Figs. 3, 8 and .9 it will be seen that the threaded portion 62 of the valve body 48 is connected to the pipe 26 and the screw-threaded portion 63 is connected to the pipe 64 which extends upwardly to the meter 28.

In order to open the valve 21 automatically, I have provided a pneumatic motor 65 which is under the control of the operator at the nozzle 39. As shown in Fig. 5, the pneumatic motor 65 comprises a casting, the lower end of which is closed by the screw-threaded cap 66. Within the interior cylinder 61 is a piston 68 to the lower side of which is connected a plunger 69 movable vertically through the cylindrical guide 18 secured to the cap 66. A spring 1I surrounds the cylindrical guide 18 and the plunger 69 and is located between the top of the cap 66 and the bottom of the piston 68. r

The plunger 69 extends through an opening at the center of the cap 66 and its lower end rests upon the horizontal arm 12 which is provided with a collar at its left-hand end, the latter being keyed at 13 to the lower end of the rod 14. The rod 14 is guided through openings in the brackets 15 and 16 which are secured to, the inner wall of the housing 11 which encloses the main dispensing valve 21 and the operating mechanism therefor. The upper end of the rod 14 is connected -by a pin and slot as indicated at 18 in Fig. 3, to the crank arm 6|. Therefore when the pneumatic motor is operated to depress the piston 68 a ainst the action of the spring 1|, the

complete rotation of the pointer 34 the pointer plunger 69 will actuate the bracket arm 12 and push down the rod 14 through the guides 15 and 16 and thereby turn the crank arm 6| in an anticlockwise direction as viewed in Fig. 3, to efiect the opening of the valve 44 shown in Fig. 9. When air pressure on the piston 68 is relieved the spring 1| restores the plunger 69 to its initial position and the spring 43 simultaneously restores the rod 14 and the arm 12 to. their initial positions and re-closes the valve 44. In order to permil; free downward movement of the piston 68 an air port is provided at 19 in the cap 66 as shown in Fig. 5.

Air pressure may be conducted into the cylinder 61 through the connection at 88 as shown in Figs. 2 and 5. A small flexible pipe 8|, preferably of metal such as copper, is led upwardly from the connection 88 as shown in Fig. 2, to the conduit 82 which'is mounted by means of the brackets 83, 83 on the vertical pipe 29. Also extending upwardly into the conduit 82 is a compressed air pipe 84, preferably of flexible metal such as copper. By referring to Fig. 1 it will be seen that the pipe 84 is connected to a compressed air supply pipe 85.

By means of a suitable air tube adapter 98, 98'

as shown in Fig. 2, the upper ends of the two metal pipes 8| and 94 are connected to the passageways 8| and 84 in the flexible hose 81 mounted on and attached to the delivery hose 3| so as to move bodily therewith. For this purpose the fiexible hose 81 may be securedto the delivery hose 3| by spirally wound tape, or by means of clamps 88.

Air valve controlling mechanism 89 is connected by means of an air tube adapter 98, 98' to the flexible pipe 81 having the two passageways 8| and 84 therethrough. The air valve mechanism 89 may be secured at 9| to the bracket 92 on the nozzle housing 93 as shown in Fig. 6.

The details of the valve mechanism 89 are shown in Fig. '1. In this view the air tube adapter is shown diagrammatically at 98 in the form of two branches of the flexible hose 81 having the passageways 8| and 84 leading respectively to the ports 95 and 94. These ports may be in the form of nipples 93 and 91 screw-threaded into the body portion of the valve mechanism 89. The port 95 communicates with the passageway 91 and leads to oppositely disposed valve ports 98 and 99. The passageway 91 may be closed at I by means of a screw plug.

A valve stem |8| has mounted thereon two valves I82 and I83. Between the nipple 96 and the valve I82 is a spring I84 which urges the valve I82 to closed position. The valves I82 and I83 are so related that when the port'98 is closed the port 99 is open. When the valve I83 closes the port 99 the valve I82 opens the port 98. When the valve I82 is closed, communication from the source of compressed air through the pipe 84 to the pneumatic motor 65 is cut 011?. When the valve I82 is closed the valve I83 is open and at this time the pneumatic motor 65 is connected through the pipe 8| to the passageway 8| and thence through the passageway 91 and the port 99 to the chamber I and the exhaust port I86, thereby relieving the air pressure on top of the piston 68 and permitting the spring 1| to return the piston to its initial position shown in Fig. .5.

As .shown in Fig. '1, a "plunger I81 extends through a bearing I88 which isscrew-threaded into one end of the cylinder I89. At the inner end of the plunger I81 is a piston II8 movable along' the cylinder I89. The inner end of the plun er I01 is provided with a recess III fitting over the valve stem IN. The piston IIO presses against the spring I I2 when the plunger I01 is moved inwardly. The inward movement of the plunger I01 causes the piston IIO to act as a valve to cut off the exhaust port I from the chamber I05 and the port 33. This is followed-by the closure ofthe valve I03 and the opening of the valve I02 when sufflcient 'forc'e is exerted on the spring II2 to counteract the spring I04. It is desirable to close the port I33 before the valve I02 is opened so that compressed air cannot escape from the supply passageway. 34' through the exhaust port during the interval when the valves I03 and I02 are both open.

By referring to Fig.5 it will be seen that a valve operating lever I I3 is pivoted to the nozzle at I I4 in such a manner that the boss I15 will engage the valve stem II5 open the nozzle valve II1 against the action of the spring II3. Securedto the valve H1 is a metal cup I3 which is provided with openings at I20. so that the 'closingof the valve II1 will not be the abrupt. The valve stem I I5 extends through'packing I2I in a packing box I22. When the nozzle is grasped in the operator's hand with his palm over. the valve I I1, his fingers may be used to move the lever II3 to the dotted line position illustrated at 3' and this operation will open the valve II1, I20.

- Before the valve I I1, I20 is opened, however, the cylindrical end I23 of the lever I I3 rides along the cam face I24 of the lever I25 which is pivoted at I25 to the nozzle housing 33. A boss I21 on the lever I25 is in position to engage the plunger I01 to efiect suflicient movement of the piston IIO to close the exhaust port I03, close the valve I03 and open the valve I02 before the valve II1. I20 is opened. To assure this sequence of movements of the valves the cylinder I I3 is provided with the ports located at I20. When the lever I I3 is moved ,to its dotted line position I I3 the cylindrical end Fig. 6, and may be provided with a cross-plate I30 to serve as a sliding bearing for the ends of the levers H3 and I25. A guard plate I3I for the valve mechanism 33 may also be provided. A hook I32 may be made integral with the guard I23 so that the nozzle may be hung on' the operating lever I33 as illustrated in Fig. 1. The nozzle may be provided with a flexible extension I34 as shown in Fig. 2, which flexible extension may be inserted through the opening I35 if desired forhanging the nozzle on the lever I33.

In Fig. 6 I have shown a non-draining valve I35 provided with a valve stem I31 extending through a guide opening I33 in the bracket I33 on the interior of the housing 33. -A spring I40 is of sumcient strength to close the valve I35 when no pump supply pressure is being exerted in the delivery hose 3 I. The spring I40 is suilicient to counteract the head of liquid in the pipe 3I when the pump supply pressure is discontinued and therefore the hose will be kept full of liquid when the pump supply pressure is cut off.

As shown in Figs. 3 and,5, an extension I 4! is carried by the bracket arm 12 and to this extension I is pivoted at I42 a bar I43 which has a sliding connection through a diametrical opening in the shaft I 44 as shown in'Figs. 4 and 10. The shaft I44 is mounted in the bearing I45 of the switch-box I45. Mounted on the inner end of the shaft I44 are spring clips I41 for engaging the opposite taped surfaces of the vacuum tube I48, preferably of glass, and containing within the same a quantity of mercury I43 for engaging the terminals I50 and I5I which project into the glass vacuum tube I 43 as diagrammatically illustrated in Fig. '12. v The supply mains I52 from the source of electrical supply are connectedto the electric motor I5 andthrough fuses I53 by means of the leads I54 and I55 to the terminals I5I and I50 respectively. The leads I54 and I55 may be connected to metal plates I55 and I51 on the block of insulation I53 mounted on the inside of the switch-box I43 as shown in Figs. and 11. This will permit the use of. slack looped leads I54 and I55 to afford ample freedom of movement of the-mercury tube I43 when tilted by rocking the shaft I44. In the wiring diagram of Fig. 12 I have also shown an incandescent lamp I53 connected through fuses I50 to the supply mains I5I,this incandescent lamp I53 being located in the reflectorhousing 33 to illuminatethe inside surfaces of the translucent or transparent dial faces 33.

It should be understood that when the operating lever I I3 is moved to its dotted line position shown in Fig. 6 the exhaust port I05 of Fig. '7 will first be closed and this will be followed by the closing of the valve I03 and the opening of the valve I02. Air. pressure supply will then pass through the pipe 35 as shown in Fig. 1 into the pipe 34.and thence through the passageway 34' of the flexible hose 31. This air pressure supply will then pass through the port 33 and passageway 31 into the passageway 3I' and the pipe 3I to the top ofthe cylinder 31 shown in Fig. 5. The 'piston 33 will move downwardly against the action of the spring 1I while the air below the piston 68 will be exhausted through the port 13. This will cause the plunger 53 to be moved downwardly to pull the rod 14 downwardly, thereby operating the crank 5| in an anticlockwise direction as viewed in Fig. 3 and in a clockwise direction as viewed in Fig.

8. This will cause the main dispensing valve to open to afford communication between the supply pipe 23 and the pipe 25 to the pipe 64 and thence to the delivery hose 3I. At the same time that the dispensing valve 21 is opened the mercury switch will be tilted to a horizontal position from its inclined position in Fig. 12. The mercury in the closed vacuum tube I43 will thereupon conmeet the terminals I50 and I5I to start the motor I5 and to'continue to operate it so long as the terminals I50 and I5I are connected by the mer cury I43.

When the motor I5 is operated the hydraulic pump I3 will be operated to pump gasoline through the suction pipe I3 and supply it to the pipe 20 through the air release 22 and the pipe 2I and thence through the pipe 23, the pipe 23.

main valve 21 and the other connections above described, to the delivery hose 3|.

It is intended that the operator shall move theoperating lever -I I3 by a continuous swing thereof to its dotted line position and that the mercury switch shall be set to effect the starting of the electric motor and the pump substantially at the same time that the main valve 21 is opened so that by the time that the nozzle valve ports I20 are opened sufllcient supply pressure from the pump will beexerted in the'delivery hose 3| to open the drain valve I35 and effect flow of gasoline through the nozzle to the-car. If, however, it should happen that the ports I20 are not sufficiently uncovered-when themotor and pump are operating, the by-pass I32 will aflord relief by vent pipe I64 is connected to the atmosphere at I65 and to the top of the supply reservoir I3 and to the top of the air release 22.

When the operator releases the lever II3 the spring II6 closes the valve II1, I 20 and returns the lever II3 to its initial position. At the same time'the plunger I01 is returned toits initial.

position by the springs I04 and H2 shown in Fig. 7. The lever I25 will thus be returned to its full line position shown in Fig. 6.

When the operator releases the lever H3 and therefore also the lever I25 the spring I04 is free to act to close the valve I02 shown in Fig. .7. This will also efiect the opening of the valve I03 and the spring H2 in turn acts on the piston IIO to uncover the exhaust port I06 so that the chamber I05 will be connected to the-atmosphere. This will result in the cylinder 61 of Fig. 5 being connected to atmosphere above the piston 68 through the pipe 6|, passageway 6|, passageway 61 and port 69, chamber I05 to exhaust port I06. The spring 43 shown in Figs. 8 and 9 will then close the valve 44 and act through the rock shaft 52 and the crank H to lift the rod 14 back to its initial position. This will also lift the extension I to its initial position and swing the rod I43 to its position shown in Fig. 3. Thereupon the mercury switch will be tilted to the position shown in Figs. 3 and 12, thereby disconnecting the terminals I50 and 'I5I and cutting oil! the electrical current supply to the motor I5, causing the pump I6 to stop.

- If for any reason the air pressure supply for the air motor 61 should fail, the main valve 21 may be opened by the lever I33 which is pivoted at I66 to the bracket I61 on the housing 11 as shown in Fig. 2. The inner end of the lever I33 is provided with an arm I66 which is adapted to swing down the nozzle through the opening I69 in the housing 11. By referring to Figs. 3 and 5 it will be seen that a plate I10 is mounted on the interior of the housing 11 back of the opening I66. The upper end of the plate I10 is secured to a shaft "I mounted in a hearing I 12 on a bracket I13 secured to -the inner side of the housing 11. A bearing for the shaft "I may be also located at I14. A quadrant arm I16 is carried by one end or the shaft "I in such a position that when the plate I10 is-swung inwardly by insertion of the nozzle through the opening I66-in the housing, the quadrant arm I15 will be swung into position below "the arm I16. The arm I16 is secured rigidly to the upper end of the rod '14. Therefore when the quadrant I15 is moved below the arm I16 such quadrant will act as an abutment against downward movement of the rod 14. Consequently when the nozzle is inserted through the opening I66 into the housing neither the main valve 21 can be opened, nor the mercury switch closed.

It should be particularly noted that by means of the single lever H3 at the nozzle a one-point control by a single person may be had at the nozzle. It will also be apparent that by reason of the foregoing construction, the one point control is a complete control in that the movement of the nozzle valve II1 toward and away from its seat may be adjustably varied by movement of the nozzle valve lever I I3 to regulate the flowof liquid through the nozzle, without changing the condition of the control switch. The response to the operation of the valve mechanism is very quick because the supply of air pressure is extended at all times through the passageway 84' up to the valve I02 at the nozzle. As soon as the valve I02 is opened and the valve I03 closed, suflicient air pressure is exerted very quickly in the pneumatic motor 61 to effect the opening of the main dispensing valve 21 and the closure of the mercury vacuum switch. A wet hose system is shown in j that the valve I36 keeps the supply hose 3| filled 1.

with liquid even when the pump is not operating. The intervals in the sequence of operations are so short as to cause the gasoline to flow through the nozzle to the car almost immediately after the operating lever H3 has been moved to its dotted line position and the nozzle valve II1, I opened. 1

Obviously those skilled in the art may make various changes in the details and arrangement of parts without departing from the spirit and scope of the invention. as defined by the claims hereto appended and I wish therefore not to be restricted to' the precise construction herein disclosed.

Having thus fully disclosed an embodiment of my invention, what I desire to secure-by Letters Patent of the United States is:

1. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle, of a check-valve connected to said hose and opening toward said nozzle when operating pressure is exerted on said valve but closing automatically when such pressure is withdrawn to prevent draining of the hose, means associated with said nozzle for controlling the operating pressure, a self-closing valve at the nozzle for controlling flow therethrough, and a manually actuated lever on the nozzle for both operating said controlling means and opening said valve.

2. In dispensing apparatus, the combination with dispensing mechanism comprising a main valve, a hose and a discharge nozzle, of apumpfor supplying liquid to said dispensing mecha-, nism, an electric motor for operating said pump, a mercury switch for controlling said motor, a pneumatic motor for opening said main valve and 7 closing said switch to start and operate said motor and pump, and air valve mechanism at the nozzle to control said pneumatic motor.

3. In dispensing apparatus, the combination with a dispensing unit comprising a housing, a

delivery hose, a discharge nozzle, a self-closing main valve in the housing, an electric motor control switch in the housing, a self-closing valve at the nozzle, and a lever for opening the last-named nozzle, of a pump for supplying liquid to said hose through said main valve, an electric motor for operating said pump, a manual lever-for opening delivery hose, a discharge nozzle, a self-closing valve for thenozzle, a self-closing main valve in the housing, a mercury electric switch in the housing, a pneumatic motor in the housing for opening the main valve and closing said switch, air valve mechanism at the nozzle for controlling said pneumatic motor, of a pump for supplying liquid to said hose through said main valve, an electric motor under the control of said switch for operating said pump, anda lever at the nozzle connected to said air valve mechanism and to the nozzle valve to first operate said air valve mechanism to secure the operation of said pneumatic motor, the opening of said main valve, the closing of said switch and the operation of said pump before the nozzle valve is opened by said lever.

5. In dispensing apparatus, thecombination with dispensing mechanism comprising a flexible hose and a delivery nozzle at the free end thereof,

of operating means for said dispensing mechanism comprising, a fluid pressure motor, valve mechanism associated with said nozzle for controlling said fiuid pressure motor, a self-closing valve at the nozzle, and a grip actuating device connected to said valve mechanism and to said self-closing valveto operate on pressure thereof to open said self-closing valve and operate said valve mechanism.

6. In dispensing mechanism, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle at the free end thereof, of a flow meter in the supply line of the dispensing mechanism for registering the liquid dischargedfrom said hose through said nozzle, a self-closing valve at the nozzle for controlling the flow from said hose through said nozzle, means for operating the dispensing mechanism and producing pressure in said hose, valve mechanism at the nozzle for controlling said operating means, and means at the nozzle for opening said selfclosing valve and operating said valve mechanism to effect flow of liquid from said hose through a to secure operation of the dispensing mechanism.

mechanism when said first-named lever is actuand flow of liquid through said nozzle immediately upon actuating said operating? mechanism at the nozzle.

8. In a nozzle for dispensing apparatus, the combination with a nozzle housing, of a self-closingvalve therein, air valve mechanism mounted on said housing, a lever pivoted to said housing in position to open said self-closing valve, and an auxiliary lever pivoted to said housing in position to be engaged by the free end of said first-named lever to efiect the operation of said air valve ated to open said self-closing valve.

. 9. In a nozzle for dispensing apparatus, the combination with a nozzle housing, of a valve for the nozzle, a lever pivoted to said housing in position to operate said valve, and means co-acting with said lever for assisting the operator in holding said lever pressed toward valve opening position. 1 I

10. In a nozzle for dispensing apparatus, the

combination with a nozzle housing, ofa valve mounted in said housing, a.lever for opening said valve, and a cam-faced spring-pressed lever for engaging the free end of said first-named lever to assist the operator in holding the valve in open position.

11. In a nozzle for dispensing apparatus, the combination with a nozzle housing, of a springpre'ssed self-closing ,valve therein having a spindle projecting outwardly therefrom, a lever pivotedto said housing in position toengage said, spindle to open said valve against the action of said spring, an auxiliary leverhaving a cam-face engaged by the free end of said first-named lever, and spring-pressed mechanism engaging said auxiliary lever to hold the same against the free end of said first-named lever when the latter is in its position for opening said valve.

12. In a nozzle for dispensing apparatus, the combination with a nozzle housing, of a self-closing valve therein comprising a stem projecting therefrom, an operating lever pivoted to said housing in. position to engage said stem, an auxiliary lever pivoted to said housing and having cam faces engaged by the free end of said first-named lever, and spring-pressed valve mechanism operated by said auxiliary lever when the free end of said first-named lever moves along said cam faces.

13. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle, of a pump for supplying liquid to said hose, an electric motor for operating said pump, an electric switch hermetically sealed from the atmosphere and connected to said motor to control the operation thereof, and means controlled from the nozzle for operating said switch.

14. In dispensing apparatus, the combination with a dispensing unit comprising a housing with a"main valve therein, a delivery hose, a discharge nozzle, and an electric switch, of a pump for supplying gasoline to said. dispensing unit, an electric motor for operating said pump under the control of said;switch, a motor for operating said main valve and closing said switch, means at the nozzle for controlling said last-named motor, a device in position to be actuated by said nozzle when inserted through an opening in said housing, and interlocking mechanism operated by said device when said nozzle is inserted through said openigg to prevent the opening of said main valve and t e closing of said switch.

15. In dispensing apparatus, the combination with a dispensing unit comprising a housing, a deliveryhose, a discharge nozzle, a main valve in the housing, a switch in the housing, a valve at the nozzle, and means at the nozzle for controlling one of said valves, of a pump for supplying liquid to said hose through said main valve, an electric motor for operating said pump, a motor for operating said main valve and closing said switch, means at the nozzle for controlling said last-named motor, an actuating device in said housing at an opening therein adapted to receive said nozzle, and mechanism connected to said actuating device for preventing opening of said main valve and closing of said switch when said nozzle is projected through said opening into said housing.

16. In dispensing apparatus, the combination with a dispensing unit comprising a housing, a v

delivery hose, a' discharge nozzle, a main, valve, and a mercury electric switch, of a pneumatic motor within said housing for operating said main valve and said switch, mechanism at the nozzle for. controlling said pneumatic motor, a self-closing valve for the discharge nozzle, and means comprising a single lever for operating said controlling mechanism and opening said valve to secure flow through said hose and said nozzle on the opening of said main valve and the closing of said switch.

17. In a nozzle for dispensing apparatus, a combination with a nozzle housing, of a sellclosing valve, a lever for opening said valve, controlling air valve mechanism on said housing, an additional lever on said housing to operate said air valve mechanism. and means for supporting said levers on said housing in position to cause the first-named lever to engage the second-named lever and operate said air valve mechanism in a predetermined sequence relative to said self-closing valve.

18. In dispensing apparatus the combination with dispensing mechanism including a delivery hose, with a delivery nozzle at the free end thereof, of power actuated apparatus for operating said dispensing mechanism, a valve at the nozzle for controlling the flow of liquid through said hose and said nozzle, a pivoted lever for operating said valve to effect the opening and closing thereof, air valve mechanism at the nozzle for controlling said power actuated apparatus, and an auxiliary lever operated by said first-named lever to eflect the operation of said air valve mechanism.

19. A dispensing apparatus, the combination with a dispensing mechanism comprising a delivery nozzle, of means for operating said dispensing mechanism, mechanism associated with the nozzle for controlling said operating means, and means comprising inter-engaging levers to enable a single operator to effect the starting and stopping of said operating means and the starting and stopping of the flow of liquid from said nozzle.

20. In a dispensing apparatus, the combination with a dispensing mechanism comprising a flexible hose with a delivery nozzle at the free end thereof, of means for operating said dispensing mechanism, a valve at the nozzle for controlling the flow of liquid therefrom, valve mechanism associated at the nozzle for controlling said operating mechanism, and means comprising inter-engaging levers for opening said valve and operating said controlling means to effect operations of said operating mechanism and the delivery of liquid from said nozzle by a one point control at the nozzle. 4

21. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery nozzle, of means for operating said dispensing mechanism, a valve at the nozzle for controlling the flow of liquid therefrom, means associated with nozzle for controlling said operating means, two levers pivoted to said nozzle, one for opening said valve and the other for operating said controlling means, a cam mechanism between said levers for enabling the valve nozzle lever to 0perate the other-lever.

22. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle, with a selfclosing valve atlsaid nozzle, means mounted directly on said nozzle for controlling the operations of said dispensing mechanism, and means comprising a pressure lever connected to said valve and also to said controlling means at said nozzle to effect the opening 01' said valve and the operation of said controlling means by pressure exerted on said lever.

' valve at the nozzle, a

23. In dispensing apparatus, the combination with a dispensing unit, of a liquid supply line, means for furnishing an unlimited continuous supply of liquid under pressure to said supply line, a delivery hose at one end of said supply line, a flow meter in the supply line for continuously metering any amounts of liquid discharged from said hose, means in the dispensing unit for e1- fecting flow control of liquid under pressure through said supply line, a nozzle at the delivery end oi said hose, a controlling valve at the nozzle, a device on the valve itself for effecting the operation of said flow controllingmeans, a conduit connecting said device on the nozzle to said flow controlling means, and a single lever for both operating the nozzle valve and said device.

24. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle, of a quantity flow indicator operable by liquid flowing in the supply line, a valve at the nozzle for controlling the discharge of liquid from said hose through said nozzle, a control device on the nozzle, single throw lever mechanism for operating both said valve and said control device, and means comprising a flexible conductor extending along the hose but immovable relatively thereto for connecting said control device to the operating parts of the dispensing mechanism.

25. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle, 01' a self-clomng meter in the supply line, a quantity indicator operated by said meter upon flow of liquid through said supply line and from the nozzle while said valve is open, mechanism for automatically operating said dispensing mechanism, means at the nozzle for controlling said op- ,erating mechanism,

a flexible conductor extending along the hose but immovable relative thereto to connect said controlling means at the nozzle to said automatic operating mechanism, and a single lever at the at the nozzle and operating said controlling means at the nozzle to secure immediately upon nozzle for opening said valve pressure in the supp line, a delivery hose connected to said supply line, a nozzle at the free end of said hose, a controlling device on the nozzle, a conduit connecting said deviceto the aforesaid means, a self-closing valve at the nozzle, and

. single throw lever mechanism on the nozzle for operating said controlling device and said valve.

27. In dispensing apparatus, the combination with dispensing mechanism comprising adelivery hose and a discharge nozzle, of a pneumatic conduit extending along said hose and fixed thereto so as to be relatively immovable, a valve controlling device on the nozzle, a discharge valve at the nozzle, a single throw lever mechanism for operating both the said valve controlling device and said discharge valve, and means at that endof said conduit remote from said nozzle for operating the dispensing mechanism under the control of said valve controllin device at the nozzle.

28. In dispensing apparatus, the combination with dispensing mechanism comprising a delivery hose and a discharge nozzle, of a pump for supplying liquid to said hose, an electric motor for operating said pump, an electric switch hermetically sealed from the atmosphere and connected to said motor to control the operation thereof, pneumatic motor for operating said switch, a pneumatic conduit extending along the hose from said nozzle to said motor, valve mechanism on the nozzle for controlling said motor, a valve for controlling flow from the nozzle, -a lever for operating said valve, and auxiliary lever mechanism connected to said lever for operation thereby to operate said valve mechanism.

29. In dispensing apparatus, the combination with a dispensing unit comprising a. housing, a delivery hose and a discharge nozzle, of a pump for the dispensing unit, an electric motor for op-v crating said pump, an electric switch mounted in said housing and hermetically sealed from the atmosphere, connections between said switch and said motor, a pneumatic motor for operating said switch to control said motor, controlling valve mechanism on the nozzle, a discharge valve at the nozzle, a lever for operating said valve, and connections between said lever and said controlling valve mechanism to enable a single operation of said lever to open the discharge valve and at the same timeoperate said controlling valve mechanism.

30. In a liquid dispensing system, a liquid delivery line terminating in a flexible hose, controllable means for supplying liquid through said line and hose, a nozzle valve controlling discharge from the hose, and operating means for starting the liquid supplying means and opening the nozzle valve after said means has been started and for closing said nozzle valve and stopping said means after the nozzle valve has been closed.

31. In liquid dispensing systems, a delivery line,

" a delivery controlling valve in said delivery line,

an electric control switch and operating means for closing the switch and opening the delivery controlling valve after the switch is closed and for opening the switch after, the delivery controlling valve is closed.

- 32. a In apparatus of the character disclosed, the combination of a liquid dispensing hose, electrically operated means for governing flow oi! liquid to the hose, a switch for controlling said means,

a valve controlling delivery of liquid by the hose and operating mechanism for said switch and valve, including means for introducing a timed relation to throw the switch before opening the Y delivery valve.

33. In a liquid dispensing system, a liquid deliveryline terminating in a'flexible hose, controllable means 'for supplying liquid through said line and hose, a valve controlling discharge through the hose, and operating means for starting the liquid supplying means and opening the valve after said means has been started, and for closing said vaiveand stopping said means after the valve has been closed. a

34. Ina liquid dispensing apparatus, the combination with measuring appar tus, a pump. a motor and a delivery hose, of a power-control organ for the motor, a master valve controlling the supply of liquid from the pump to the measuring apparatus, a discharge valve, a manipulatk ing device at the end of the hose, and means I a,oca,aos 7 operable by said manipulating device-for opening said discharge valve, for placing said power-control organ in the power-on condition, for moving said master valve to the dispensing condition, and for adjusting said discharge valve to'regulate the outflow of liquid without changing the condition of said power-control organ.

35. In a liquid dispensing apparatus, the combination with measuring apparatus, a pump, a motor and a delivery hose, of a power-control organ for the motor, a master valve controlling the supply of liquid from the pump to the measuring apparatus, a discharge valve, a manipulating device at the end of the hose, and meansoperable by said manipulating device for opening said discharge valve, for placing said power-control organ in the power-on condition, for moving said master valve to the dispensing condition, and for adjusting said discharge valve to regulate the out-flow of liquid-without changing the condition of said power-control organ or of said master valve.

36. A gasoline dispensing mechanism comprising a pump, control means for the pump, a dis- .pensing line, a nozzle assembly at the delivery end of said dispensing line, a nozzle valve in the nozzle assembly, an operating member inthe nozzle assembly for the nozzle valve, a second operating member in the nozzle assembly, means operatively connecting said second operating member and the pump control means, each of said operating members being movable independently of the other for at least a portion of its range of opcrating movement.

.nozzle assembly, an operating member in the nozzle assembly for the nozzle valve, a second operating member in the nozzle assembly, means operativeiy connecting said second operating member and the pump control means, each of said operating members being movable for at least/a portion of its rangepi operating movement independently or the other, and manually operable means for operating said members, said manually operable means on actuation being operable to move said valve operating member a predetermined distance before operation or said second operating member.

38. A gasoline dispensing mechanism comprising a pump, control means for the pump, a dispensing line, a nozzle assembly at the delivery end of said dispensing line, a nozzle valve in the nozzle assembly, a guard for said nozzle, an operating member in the nozzle assembly for the nozzle valve and disposed in the plane 0! the guard, a

second operating member in the nozzle assembly and disposed in the plane of the guard, means operatlvely connecting said second operating member and the pump control means.

" 39.In-,a liquid dispensing device the combination of a dispensing'pump having an actuatable member, means forming a liquid flow line termimating" in a nozzle provided with a displaceable nozzle valve, a plurality of shiitable levers, means actuated by said levers ior actuating the nozzle valve and tor actuating the pump, said nozzle, 'havinga guard lying in the plane of movement of saidlevers and adapted to pmtect'them from inadvertent operation.

LEMENT IE. GRIFFITH, 

